15242731389 has 20 divisors (see below), whose sum is σ = 22949313024. Its totient is φ = 10081799784.

The previous prime is 15242731337. The next prime is 15242731397. The reversal of 15242731389 is 98313724251.

It is a happy number.

15242731389 is a `hidden beast` number, since 15 + 242 + 7 + 313 + 89 = 666.

It is not a de Polignac number, because 15242731389 - 2⁷ = 15242731261 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15242731319) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 730587 + ... + 751160.

Almost surely, 2^15242731389 is an apocalyptic number.

It is an amenable number.

15242731389 is a deficient number, since it is larger than the sum of its proper divisors (7706581635).

15242731389 is a wasteful number, since it uses less digits than its factorization.

15242731389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1481886 (or 1481877 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The spelling of 15242731389 in words is "fifteen billion, two hundred forty-two million, seven hundred thirty-one thousand, three hundred eighty-nine".